4.2" Fossil Crinoid and Coral Association - Crawfordsville, Indiana

 
 
This is a detailed association of two crinoids and coral, collected from the famous crinoid beds near Crawfordsville, Indiana. This association includes a 1.2" long Scytalocrinus disparilis (#42), a 2.6" long (including stem) Abrotocrinus unicus crinoid (#2) and a coral fossil of the species Cladochonus beecheri (#110). The quality of preparation on this fossil is exquisite - using skillful air-abrasion techniques under a stereo microscope.

Comes with an acrylic display stand.

It is believed that crinoids from the Ramp Creek Limestone were buried in sediment from nearby deltas during storms. The resulting siltstone deposits are soft enough that fossils can be extracted in exquisite, three-dimensional relief.

Crinoids, sometimes commonly referred to as sea lilies, are animals, not plants. They are echinoderms related to starfish, sea urchins, and brittle stars. Many crinoid traits are like other members of their phylum. Such traits include tube feet, radial symmetry, a water vascular system, and appendages in multiples of five (pentameral). They first appeared in the Ordovician (488 million years ago) and some species are still alive today.

DETAILS
SPECIES
Scytalocrinus disparilis, Abrotocrinus unicus & Cladochonus beecheri (coral)
LOCATION
Crawfordsville, Indiana
FORMATION
Edwardsville Formation
SIZE
Rock 4.2 x 3.7"
CATEGORY
SUB CATEGORY
ITEM
#150443
GUARANTEE
We guarantee the authenticity of all of our
specimens. Read more about our
Authenticity Guarantee.